Adam O'Neill & Associates, LLC

Adam O'Neill & Associates, LLC Practicing Christian psychiatry and providing Ketamine Infusion Therapy in Northern Virginia.

We’re honored to welcome Siyoung Jung, MA, to our team as a Biblical Counselor.Siyoung is an ordained pastor in the Pres...
06/23/2025

We’re honored to welcome Siyoung Jung, MA, to our team as a Biblical Counselor.

Siyoung is an ordained pastor in the Presbyterian Church in America (PCA) with over six years of counseling experience in the church context. He holds a Master of Arts in Biblical Studies from Reformed Theological Seminary in Washington, DC, and has completed counseling training through the Christian Counseling & Educational Foundation (CCEF).

With deep pastoral wisdom and a steady, Scripture-guided approach, Siyoung walks with individuals through anxiety, depression, relational challenges, and life transitions—helping them see how God speaks into every struggle with truth, grace, and hope.

He currently serves as Executive Pastor at Cornerstone Ministry in Fairfax, and brings to our clinic a thoughtful and theologically rooted perspective that complements our integrative model of care.

We’re thrilled to welcome Heather, a Certified Women’s Health Nurse Practitioner with a specialty in endocrinology, to o...
06/23/2025

We’re thrilled to welcome Heather, a Certified Women’s Health Nurse Practitioner with a specialty in endocrinology, to our team at Adam O’Neill & Associates.

Heather brings years of experience caring for both men and women with complex hormonal and metabolic conditions including thyroid disease, diabetes, PCOS, irregular cycles, menopause, and more. Her approach is both comprehensive and holistic, grounded in clinical excellence and deep patient education, with a desire to glorify God in the pursuit.

With training from Eastern University, the University of Pennsylvania, and Duke University, Heather is uniquely equipped to guide patients through the often-overwhelming world of hormones with clarity, compassion, and a commitment to whole-person health.

Address

8324 Professional Hill Drive
Fairfax, VA
22031

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm
Saturday 9am - 3pm

Telephone

+1 703-261-4177

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